After completing zone 4 and finally beating the Necrodancer i can say with all honesty that this game is abosLUTEly worth the price.

Crypt of the Necrodancer is my first rogue-lite and man was it a ride.
Aside of featuring a amazing soundtrack, this game is incredibly rewarding; whenever i beat a boss i get such a rewarding and amazing feeling. I feel this way partly because of the soundtrack pumping me up and the game being pretty difficult wich may scare of some players (only 8,7% of players beat zone 4).

But the difficulty only makes each victory more rewarding.
Final score: Swinging!